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United Kingdom weather

Weather in Swindon for September 2026

Your guide to Swindon weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Swindon at the beginning of September is 20.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.4 °C by the end of September.

    • Rain 🌧️

  • The climate of Swindon in September is notably wet, with an average of 12 rainy days, and a total of 200.3 mm of precipitation.

    • More

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Average dry days
18
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/8°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Swindon Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Light rain shower
20°
2
Overcast
20°
3
Light rain shower
20°
4
Sunny
19°
5
Sunny
21°
6
Partly cloudy
23°
7
Sunny
23°
8
Partly cloudy
22°
9
Sunny
22°
10
Partly cloudy
21°
11
Light rain shower
17°
12
Light rain shower
15°
13
Overcast
15°
14
Overcast
17°
15
Partly cloudy
19°
16
Light drizzle
19°
17
Light rain shower
18°
18
Light drizzle
20°
19
Light drizzle
21°
20
Light rain shower
19°
21
Light rain shower
16°
22
Light rain shower
15°
23
Cloudy
16°
24
Patchy rain possible
16°
25
Patchy rain possible
16°
26
Patchy light drizzle
16°
27
Fog
14°
28
Overcast
15°
29
Partly cloudy
15°
30
Overcast
16°

Temperatures trend during September in Swindon

See the weather trend as well as the moving average line

September weather in Swindon day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 20° /11° 6.4 mm 5
2 Sept. Overcast
Overcast
 20° /12° 2.9 mm 5
3 Sept. Light rain shower
Light rain shower
 20° /11° 2.4 mm 4
4 Sept. Sunny
Sunny
 19° /12° 3 mm 5
5 Sept. Sunny
Sunny
 21° /11° 9.4 mm 5
6 Sept. Partly cloudy
Partly cloudy
 23° /13° 2.8 mm 5
7 Sept. Sunny
Sunny
 23° /13° 0.8 mm 5
8 Sept. Partly cloudy
Partly cloudy
 22° /13° 10.4 mm 5
9 Sept. Sunny
Sunny
 22° /12° 0.2 mm 5
10 Sept. Partly cloudy
Partly cloudy
 21° /11° 1.5 mm 5
11 Sept. Light rain shower
Light rain shower
 17° /9° 1.6 mm 4
12 Sept. Light rain shower
Light rain shower
 15° /8° 1.7 mm 4
13 Sept. Overcast
Overcast
 15° /8° 1.2 mm 3
14 Sept. Overcast
Overcast
 17° /8° 3.6 mm 4
15 Sept. Partly cloudy
Partly cloudy
 19° /10° 0.3 mm 5
16 Sept. Light drizzle
Light drizzle
 19° /10° 0.2 mm 5
17 Sept. Light rain shower
Light rain shower
 18° /11° 2.6 mm 4
18 Sept. Light drizzle
Light drizzle
 20° /11° 0.2 mm 5
19 Sept. Light drizzle
Light drizzle
 21° /12° 0.4 mm 5
20 Sept. Light rain shower
Light rain shower
 19° /10° 5 mm 4
21 Sept. Light rain shower
Light rain shower
 16° /8° 1.8 mm 4
22 Sept. Light rain shower
Light rain shower
 15° /8° 1.9 mm 3
23 Sept. Cloudy
Cloudy
 16° /7° 0.1 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 16° /9° 0.3 mm 4
25 Sept. Patchy rain possible
Patchy rain possible
 16° /8° 1.4 mm 4
26 Sept. Patchy light drizzle
Patchy light drizzle
 16° /8° 2.4 mm 4
27 Sept. Fog
Fog
 14° /8° 3.2 mm 3
28 Sept. Overcast
Overcast
 15° /8° 0.8 mm 4
29 Sept. Partly cloudy
Partly cloudy
 15° /7° 3.7 mm 4
30 Sept. Overcast
Overcast
 16° /8° 3.7 mm 4
Next
Important Notice
Our weather forecast for Swindon in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Swindon forecast closer to your planned date for the most up-to-date weather information.
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Swindon in September - FAQ

What are the expected maximum and minimum temperatures in Swindon during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Swindon during September?
Significant rainfall exceeding 200.3 mm is expected in Swindon during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Swindon during September?
The average wind speed in Swindon during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Swindon

Explore the daily rainfall trends and prepare for Swindons September weather 💧

UV exposure in Swindon during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Swindon?

Get accurate weather forecasts for Swindon, located at latitude 51.558 and longitude -1.781. Stay updated with localized weather information tailored for Swindon.

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